20473527161 has 8 divisors (see below), whose sum is σ = 20984919144. Its totient is φ = 19962708480.

The previous prime is 20473527133. The next prime is 20473527163. The reversal of 20473527161 is 16172537402.

It can be written as a sum of positive squares in 4 ways, for example, as 499075600 + 19974451561 = 22340^2 + 141331^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20473527161 - 2²⁶ = 20406418297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20473527163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70556 + ... + 214301.

It is an arithmetic number, because the mean of its divisors is an integer number (2623114893).

Almost surely, 2^20473527161 is an apocalyptic number.

It is an amenable number.

20473527161 is a deficient number, since it is larger than the sum of its proper divisors (511391983).

20473527161 is a wasteful number, since it uses less digits than its factorization.

20473527161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286651.

The product of its (nonzero) digits is 70560, while the sum is 38.

The spelling of 20473527161 in words is "twenty billion, four hundred seventy-three million, five hundred twenty-seven thousand, one hundred sixty-one".